Firearm.



N. PIEPER.

FIREARM. APPLICATION FILED NOV. 23, 1908.

' Patentd July 6,1909.

- To all 3127mm it may con-cam:

'- Be it known that I, NICOLAS Prni nn,

FIREARM.

Specification of Letters Patent Patented July 6, 1909.

Application filed November 23, 1908. Serial No. 464,015.

' subject of the King of Belgium, and residing at Liege, Belgium, haveinvented certain newand useful Improvements in Firearms; and I herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the'art to which itappertains to make and use the same.

This invention has reference to automatic fire-arms of that type inwhich the connection between the trigger and the sear of the lock ismade by a limb or stirrup and has for its object to provide improvedmechanism, which effects, in a positive manner, the disengagementbetween the sear and its operating or connecting bar on the hammer beingthrown forward, thereby preventing the untimely or inadvertentdischarge'of the whole of the cartridges contained in the magazineshould the pressure of the finger on the trigger be maintained after ashot has been fired. The said invention is particularly applicable toautomatic pistols in which the lock comprises a hammer and a s iralmain-s ring located in the rear part of the frame orliody of the arm. Va In the accompanying drawings, Figure 1. is an'elevation, partially insection, of a istol. embodying the invention, the same eing shown withthe hammer cooked and the searconnecting bar in -engagement with thetrig;

'ger. Fig. 2 is a similar view, but shows the positions assumed by theparts on the trigger eing pulled; the hammer being thrown forward andthe connecting limb disengaged from the sear. Fig. 3 is an elevation ofthe same mechanism. Fig. 4 shows, separately, and in elevation and plan,the trigger and its connecting limb; Fig. 5- shows, separately,

in side and front elevations, the scar of the same pistol, while Fig. 6shows similar views of the lover by which the disengagement of theconnecting bar is effected.

Referring to the construction shown in if Figsxl and 2, 41 5 and 6, thepistol consists essentially of a frame or body 1, carrying the -barreland breech-slide, and having pivoted,

. at its fore part, the trigger 2, while the rear portion of said bodyis fitted with the hammer 3, the main or firing spring 4 and the.

sear 5,, v The connecting limb 6 acts as its own spring, being ,eithermade in a piece with the trigger 2 (Fig. 4) or rigidly fixed to thelatter, while its rearward end is provided with a notch or recess 10which engages the lateral projection 11 of the sear 5, and which. isconstantly maintained against said projection by the spring action ofthelimb. The groove 7, in which the spring limb .6 has its slidingmovement, is formed from the outside in the lateral face of the body insuch amanner that no mortising work is required and that the springmaybe introduced sidewise. into its-place in the said body. The trigger2 is provided at the rear, with a small rod 9 which is surrounded by aspring 12 whose tendency is to force the trigger in the forwarddirection to an extent which is limited by a small screw 13 attached tothe upper part of the body in the path of the said trigger. The firingspring 4; acts on the hammer through thejmediuin of a plunger 14 whoseguide rod or stem is. surrounded by the I said spring, while its head 1scut away obliquely at the front to provide an'inclined surface at 15.

The disengaging action is produced by the cranked lever 16 (Fig; 6)which is pivoted in the body so as to rock about an axis 17. One arm ofthis disengaging lever has its bearing on the upper edge of theconnecting limb 6, while the other armcarrics a pin or pIOJOCtLOR18,.wh1ch 13 made to bear against the inclined head 15 of thefiring-spring plunger 1 1, by the action of the spring part of theconnecting limb. By vlrtue of tlusarrange- Inent, when the hammer 3 iscocked, the

' plunger head. 14 is maintained, by the com pressed firing spring,inthe depressed position shown in Fig. 1, in such a manner that. the stud18 on'the one arm of the disengaging lever 16 lies at the top of theinclined plane 15, while the other arm lies in such a raised positionrelative to the limb 6 as to admit of the notch 10 of the latter partengaging with the scar projection 11. On the other hand,

when the hammer is released and swings to discharge the arm, the plungeris raised, its inclined plane 15.,acts upon and rocks the disengaginglover so that thehorizontal arm ofthe' latter .makes a downward. angularmovement and so bcnds or deflects the spring or flexible end of theconnecting limb nto a position in which it cannot possibly reengage withthe sear until the hammer has been again cocked. I

It is obvious that the mechanism in which the disengaging action isobtained from the hammer or firing spring is also applicable to otherarms having locks similar to those above described but (littering intheir general erran gemen t.

l-Iaving fully described my invei'ition, what I desire to claim andsecure by Letters Patent is:-

1. In a. firearm of the character described, the eombimition with afiring hammer a sear, a trigger, a connecting limb adapted to be actuated by the trigger to disengage the scar, and hannncr, and aspringfor impelling the hammer forward "when released by the sear, of apivotaliy mounted dii-iengnging piece supported intlependcntly oi the.ln'unn'ier and adapted to be rocked by the action of said s Wing andtovary the relative positions of the connecting limb and sear, whereby thelatter will reengage and detain thehammcr in is rearward position evenif the trigger is not released.

2. in a firearm of the chamcter described, the combination with aliringhammer, a scar, a trigger, a connect ing limb adapted tobeactuated by the trigger to disengage the etuir and hnnnner, and aspring for impelling the hammer forward when released by the sear, of apivotally mounted bell crank having one arm mitending into engagementwitl a portion of the connecting limb and another nrm.

arranged to receive pressure exerted. by the hammer spring, whereby whenthe hammer is moved forward by said spring the connectlimb will bedisengaged from the sear.

m substantially as and for the purpose described.

In a; tire-ere]. of tlieicharecter described, the combination with afiring; hen'imer, a scar, a trigger, and a connecting limb adapted to beactuated by the trigger to disengage the soar and hammer, of a springpressed plunger engaging the hammer and noting to move it for ard, andan adjustable disengaging piece having a member extending into the pathof said plunger and a member adapted, as naid piece is rocked by theplunger, to vary the relative positions of the scar and connecting limbto permit the soar to reengage the hammer before. the trigger isrelenscd.

A. in alirenrm of the character described, the combination with a firinghammer, a scar, a trigger, and a com'lecting limb adapted to be actuatedby the trigger to disengage the scar and hammer, of a iniriingf'preseedplunger engaging the hammer and acting to move it forward and anadjustable disengaging piece having a member bearing against a camsurface on said plunger,'whereby it will be moved from one position toanother as the hammer moves forward, end adapted to vary the relative)OSitlOIlS of the soar and connecting" piece by such. movement,substantiallv as and for the purpose described.

In testimony whereof I aflix my signature in presence of two witnesses.

NICOLAS PIEP'ER. Witnesses I II. A. Memoir, HENRI .BAnnn.

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